The time frame is roughly that of 1815-1830 and the historical setting in France is that of the June Rebellion. The letter of the law was cruel and unjust in France during that time. And it is in that social environment that a young Jean Valjean is sent to prison for stealing a loaf of bread, and he is in prison for 19 years. The story examines law vs. justice and mercy or grace on a social standing. But it is also a story of redemption and examines social redemption as well as personal redemption through the grace of God.
I had heard of the story of Les Misérables but had never read the book nor seen a drama production of it. So I can not speak to the accuracy of the audio presentation by Focus on the Family Radio Theatre as it relates to Victor Hugo's book. I can, however, attest to the fine quality of this production, the sound effects, the dramatization of actors, the flow of the story from its beginning to its climax. I highly recommend this audio presentation to families. The only restraint I have is that parents listen to it first prior to having their children listen to best determine at what age they prefer to have their children listen to it. That period of French history was cruel and violent and this story presents the period well.